摘要:
Disclosed herein is a method of injection molding at low, substantially constant melt pressures. Embodiments of the disclosed method now make possible a method of injection molding that is more energy—and cost—effective than conventional high-velocity injection molding processes. Embodiments of the disclosed method surprisingly allow for the filling of a mold cavity at low melt pressure without undesirable premature hardening of the thermoplastic material in the mold cavity and without the need for maintaining a constant temperature or heated mold cavity. Heretofore, it would not have been expected that a constant pressure method could be performed at low pressure without such premature hardening of the thermoplastic material when using an unheated mold cavity or cooled mold cavity.
摘要:
Disclosed herein are methods of injection molding at low, substantially constant melt pressures. Embodiments of the disclosed method now make possible a method of injection molding that is more energy—and cost—effective than conventional high-velocity injection molding processes. Embodiments of the disclosed method surprisingly allow for the filling of a mold cavity at low melt pressure without undesirable premature hardening of the thermoplastic material in the mold cavity and without the need for maintaining a constant temperature or heated mold cavity. Heretofore, it would not have been expected that a constant pressure method could be performed at low pressure without such premature hardening of the thermoplastic material when using an unheated mold cavity or cooled mold cavity.
摘要:
A low constant pressure injection molding machine forms molded parts by injecting molten thermoplastic material into a mold cavity at low constant pressures of 6,000 psi and lower. As a result, the low constant pressure injection molding machine includes a mold formed of easily machineable material that is less costly and faster to manufacture than typical injection molds.
摘要:
Dairy compositions are provided having a high pH, of about 4.8 to about 6.2, comprising desirable probiotic cultures as well as an anti-microbial system for inhibiting undesirable pathogenic and/or spoilage microbial growth without significantly reducing the beneficial effect of the probiotic cultures.
摘要:
In a process for producing PCCD polyester of the formula by reacting a starting CHDM and a starting DMCD in the presence of a catalyst to produce an aliphatic alcohol and an acid interchange oligomer and forming a low viscosity PCCD, and reacting the intermediate PCCD by solid state polymerization for increasing the molecular weight of to form a PCCD having melting temperature of about 225 to about 234 degrees Centigrade and a viscosity from about 2,000 to about 20,000 poise.
摘要:
A light probe assembly for mounting in a casing wall comprising a swage lock fitting sized to receive an outer tube; a light probe extending through the fitting and received within the outer tube; wherein the fitting is adapted for attachment to the casing wall, and wherein a remote end of the light probe is seated on an internal shoulder at a forwardmost end of the outer tube.
摘要:
A spud assembly for a fuel tank in a vehicle includes a flange tower adapted to be at least partially disposed in a fill spout of a fuel tank. The spud assembly also includes a bead flange extending from the flange tower for engagement with a tank filler neck tube to retain the tank filler neck tube thereto. The spud assembly further includes a check valve disposed within the flange tower to allow fuel to enter the fuel tank from the tank filler neck tube and prevent fuel from exiting the fuel tank to the tank filler neck tube.
摘要:
A light probe assembly for mounting in a casing wall comprising a swage lock fitting sized to receive an outer tube; a light probe extending through the fitting and received within the outer tube; wherein the fitting is adapted for attachment to the casing wall, and wherein a remote end of the light probe is seated on an internal shoulder at a forwardmost end of the outer tube.
摘要:
A movable overhead ventilation assembly is provided for use in a work facility to be positioned in close proximity to a source of airborne environmental material. The ventilation assembly includes a supporting frame located within the work facility. The frame includes a longitudinally-disposed overhead track. A movable chassis is carried by the track. A ventilation housing is carried by the chassis for overhead translational movement of the ventilation housing within the work facility. The ventilation housing includes a plurality of walls, and has at least two openings therein defining respective inlet and outlet zones thereof. An exhaust fan is located within the ventilation housing between the inlet zone and the outlet zone for creating an upwardly moving air stream in the area surrounding the source of airborne environmental material. A filtration medium is positioned between the inlet zone and the fan of the ventilation housing for capturing and separating material entrained in the upwardly moving air stream as the air stream enters the ventilation housing through the inlet zone and exits through the outlet zone. A drive wheel moves the chassis along the track within the work facility.